Shaft for medical instrument



FIG. 1 is a top perspective view of a shaft for medical instrument in accordance with the new design;

FIG. 2 is a side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a front view thereof. 

The ornamental design for a shaft for medical instrument, as shown and described. 